Muscles of Head and Neck Flashcards
Levator Scapulae
O- C1-4
I- Upper vertebral border of scapula
A-elevate scapula
Scalenes
O- Transverse process of cervical vertebrae
I- Ribs 1 & 2
A- rotates neck
Sternocleidomastoid
O- sternum, clavicle
I- mastoid process
A- flexes head
Sternohyoid
depress hyoid
Sternothyroid
depresses thyroid cartilage
Omohyoid
depress hyoid bond
Platysma
opens jaw
Mylohyoid
elevates hyoid
Frontalis
raise eyebrows
Occipitalis
draws scalp posterior
Temporalis
O- Temporal fossa
I- Ramus of mandible
A- close mandible
Masseter
O- Zygomatic arch
I- ramus of mandible
A- closes mandible
Pterygoids
medial gliding of mandible
Orbicularis oris
O- facial muscles near mouth
I- skin of lips
A- closes lips
Orbicularis oculi
O- Frontal and maxilla on medial margin of orbit
I- skin of eyelid
A- closes eyelid